diff --git a/app/models/procedure.rb b/app/models/procedure.rb
index cd90371f7..c09adbe39 100644
--- a/app/models/procedure.rb
+++ b/app/models/procedure.rb
@@ -1,6 +1,7 @@
 class Procedure < ActiveRecord::Base
   has_many :types_de_piece_justificative, dependent: :destroy
   has_many :types_de_champ, dependent: :destroy
+  has_many :types_de_champ_private, class_name: 'TypeDeChampPrivate', dependent: :destroy
   has_many :dossiers
 
   has_one :procedure_path, dependent: :destroy
diff --git a/app/models/type_de_champ.rb b/app/models/type_de_champ.rb
index e4df31ea0..6a738957f 100644
--- a/app/models/type_de_champ.rb
+++ b/app/models/type_de_champ.rb
@@ -18,6 +18,8 @@ class TypeDeChamp < ActiveRecord::Base
 
   has_many :champ, dependent: :destroy
 
+  default_scope { where(private: false) }
+
   validates :libelle, presence: true, allow_blank: false, allow_nil: false
   validates :type_champ, presence: true, allow_blank: false, allow_nil: false
   # validates :order_place, presence: true, allow_blank: false, allow_nil: false
diff --git a/app/models/type_de_champ_private.rb b/app/models/type_de_champ_private.rb
new file mode 100644
index 000000000..c9acf24e2
--- /dev/null
+++ b/app/models/type_de_champ_private.rb
@@ -0,0 +1,9 @@
+class TypeDeChampPrivate < TypeDeChamp
+  after_initialize :force_private_value
+
+  default_scope { where(private: true) }
+
+  def force_private_value
+    self.private = true
+  end
+end
\ No newline at end of file
diff --git a/app/serializers/procedure_serializer.rb b/app/serializers/procedure_serializer.rb
index 69d3bf307..c85ed7ff4 100644
--- a/app/serializers/procedure_serializer.rb
+++ b/app/serializers/procedure_serializer.rb
@@ -12,6 +12,7 @@ class ProcedureSerializer < ActiveModel::Serializer
 
 
   has_one :geographic_information, serializer: ModuleApiCartoSerializer
-  has_many :types_de_champ,  serializer: TypeDeChampSerializer
-  has_many :types_de_piece_justificative,  serializer: TypeDePieceJustificativeSerializer
+  has_many :types_de_champ, serializer: TypeDeChampSerializer
+  has_many :types_de_champ_private, serializer: TypeDeChampSerializer
+  has_many :types_de_piece_justificative, serializer: TypeDePieceJustificativeSerializer
 end
diff --git a/app/serializers/type_de_champ_serializer.rb b/app/serializers/type_de_champ_serializer.rb
index bbe2cb7dc..ebf66c0b8 100644
--- a/app/serializers/type_de_champ_serializer.rb
+++ b/app/serializers/type_de_champ_serializer.rb
@@ -3,5 +3,6 @@ class TypeDeChampSerializer < ActiveModel::Serializer
              :libelle,
              {:type_champ => :type},
              :order_place,
-             :description
+             :description,
+             :private
 end
\ No newline at end of file
diff --git a/db/migrate/20160802131031_add_public_attr_on_type_de_champ.rb b/db/migrate/20160802131031_add_public_attr_on_type_de_champ.rb
new file mode 100644
index 000000000..05491de73
--- /dev/null
+++ b/db/migrate/20160802131031_add_public_attr_on_type_de_champ.rb
@@ -0,0 +1,5 @@
+class AddPublicAttrOnTypeDeChamp < ActiveRecord::Migration
+  def change
+    add_column :types_de_champ, :private, :boolean, default: false
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 5eed35e00..65a008f87 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20160802113112) do
+ActiveRecord::Schema.define(version: 20160802131031) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -296,6 +296,7 @@ ActiveRecord::Schema.define(version: 20160802113112) do
     t.integer "procedure_id"
     t.text    "description"
     t.boolean "mandatory",    default: false
+    t.boolean "private",      default: false
   end
 
   create_table "types_de_piece_justificative", force: :cascade do |t|